Alright, let's work through 90949591 times 96631067 step by step
90949591 × 96631067 = 96631067 × (90949591)
+ 96631067 × 1 that results in 96631067
+ 96631067 × 90 giving us 8696796030
+ 96631067 × 500 that equals 48315533500
+ 96631067 × 9000 resulting in 869679603000
+ 96631067 × 40000 that is equal 3865242680000
+ 96631067 × 900000 which equals 86967960300000
+ 96631067 × 0000000 yielding 0
+ 96631067 × 90000000 giving us 8696796030000000

= 8788556021543597
